Just before LaMia Flight 2933 crashed into a hillside near Medellin, Colombia, a crew member onboard told air traffic controllers, "The plane is in total electric failure and without fuel," according to two sources familiar with the investigation who heard audio recordings.

The conversations add new details to the final moments of the crash Monday that killed 71 people, including members of a Brazilian soccer team.

They also add further evidence supporting investigators' suspicions that the jet had depleted its fuel during its charter flight from Santa Cruz, Bolivia, to Medellin.